Tensile properties and strengthening mechanisms of a TWIP steel at high strain rate: Hall-Petch relationship

被引：4

作者：

de las Cuevas, Fernando ^{[1
,2
]}

Ferraiuolo, Alessandro ^{[3
]}

Karjalainen, L. Pentti ^{[4
]}

Gil Sevillano, Javier ^{[1
,2
]}

机构：

[1] Univ Navarra, CEIT, San Sebastian 20018, Spain

[2] Univ Navarra, TECNUN, San Sebastian 20018, Spain

[3] Ctr Sviluppo Mat, Rome, Italy

[4] Oulu Univ, FI-90014 Oulu, Finland

来源：

REVISTA DE METALURGIA | 2014年 / 50卷 / 04期

关键词：

Hall-Petch; Stacking fault energy; Twinning; TWIP; Work hardening rate; INDUCED PLASTICITY STEELS; STACKING-FAULT ENERGY; SI) TRIP/TWIP STEELS; DEFORMATION; METALS; GRAIN; FE-MN-(AL; BEHAVIOR;

D O I：

10.3989/revmetalm.031

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The influence of strain rate and grain size on the mechanical properties of a 22% Mn, 0.6% C (mass %) austenitic TWIP steel has been studied. A typical quasi-linear stress-strain behaviour of TWIP steels that deform by twinning has been observed at strain rates of 9.4 s(-1) and 265 s(-1) and room temperature. At high strain rates, the constant work - hardening rate region typically observed in TWIP steel clearly shortens. In addition, the Hall-Petch relationship has been obtained for each strain rate. The Hall-Petch slope K-HP increases as a function of strain in all cases. The dependence of the K-HP on the strain rate could be adiabatic heating.

引用

页数：8

共 36 条

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